#!amber

# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


# A test for a bug found by GraphicsFuzz.

# Short description: A fragment shader with a discard, continue, and return

# The test passes because main always writes the color red.

# Optimized using spirv-opt with the following arguments:
# '-O'
# spirv-opt commit hash: 06407250a169c6a03b3765e86619075af1a8c187


SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 310 es
# precision highp float;
#
# layout(set = 0, binding = 0) uniform buf0 {
#  vec2 injectionSwitch;
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# vec3 mand()
# {
#  do
#   {
#    if(gl_FragCoord.x < 0.0)
#     {
#      if(1.0 > injectionSwitch.y)
#       {
#        discard;
#       }
#      continue;
#     }
#    return vec3(1.0);
#   }
#  while(false);
#  return vec3(1.0);
# }
# void main()
# {
#  mand();
#  _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
# }
SHADER fragment variant_fragment_shader SPIRV-ASM
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 7
; Bound: 95
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %17 %51
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %17 "gl_FragCoord"
               OpName %30 "buf0"
               OpMemberName %30 0 "injectionSwitch"
               OpName %32 ""
               OpName %51 "_GLF_color"
               OpDecorate %17 BuiltIn FragCoord
               OpMemberDecorate %30 0 Offset 0
               OpDecorate %30 Block
               OpDecorate %32 DescriptorSet 0
               OpDecorate %32 Binding 0
               OpDecorate %51 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
         %15 = OpTypeVector %6 4
         %16 = OpTypePointer Input %15
         %17 = OpVariable %16 Input
         %18 = OpTypeInt 32 0
         %19 = OpConstant %18 0
         %20 = OpTypePointer Input %6
         %23 = OpConstant %6 0
         %24 = OpTypeBool
         %28 = OpConstant %6 1
         %29 = OpTypeVector %6 2
         %30 = OpTypeStruct %29
         %31 = OpTypePointer Uniform %30
         %32 = OpVariable %31 Uniform
         %33 = OpTypeInt 32 1
         %34 = OpConstant %33 0
         %35 = OpConstant %18 1
         %36 = OpTypePointer Uniform %6
         %46 = OpConstantFalse %24
         %50 = OpTypePointer Output %15
         %51 = OpVariable %50 Output
         %52 = OpConstantComposite %15 %28 %23 %23 %28
         %65 = OpConstantTrue %24
          %4 = OpFunction %2 None %3
          %5 = OpLabel
               OpBranch %71
         %71 = OpLabel
               OpLoopMerge %72 %73 None
               OpBranch %75
         %75 = OpLabel
               OpLoopMerge %76 %87 None
               OpBranch %78
         %78 = OpLabel
         %79 = OpAccessChain %20 %17 %19
         %80 = OpLoad %6 %79
         %81 = OpFOrdLessThan %24 %80 %23
               OpSelectionMerge %82 None
               OpBranchConditional %81 %83 %82
         %83 = OpLabel
         %84 = OpAccessChain %36 %32 %34 %35
         %85 = OpLoad %6 %84
         %86 = OpFOrdGreaterThan %24 %28 %85
               OpSelectionMerge %87 None
               OpBranchConditional %86 %88 %87
         %88 = OpLabel
               OpKill
         %87 = OpLabel
               OpBranchConditional %46 %75 %76
         %82 = OpLabel
               OpBranch %76
         %76 = OpLabel
         %94 = OpPhi %24 %65 %82 %46 %87
               OpSelectionMerge %91 None
               OpBranchConditional %94 %72 %91
         %91 = OpLabel
               OpBranch %72
         %73 = OpLabel
               OpBranch %71
         %72 = OpLabel
               OpStore %51 %52
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# injectionSwitch
BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA
 0.0 1.0
END

BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM

PIPELINE graphics variant_pipeline
  ATTACH variant_vertex_shader
  ATTACH variant_fragment_shader
  FRAMEBUFFER_SIZE 256 256
  BIND BUFFER variant_framebuffer AS color LOCATION 0
  BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 0
END
CLEAR_COLOR variant_pipeline 0 0 0 255

CLEAR variant_pipeline
RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256

EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255